David Hunkeler

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St. Sulpice, CH

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Patents Grantslast 30 patents

Information Patent Grant
Polymer flocculants with improved dewatering characteristics
- Patent number 6,667,374
- Issue date Dec 23, 2003
- Ecole Polytechnique Federal de Lausanne
- Jose Hernandez-Barajas
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polymer flocculants with improved dewatering characteristics
- Patent number 6,617,402
- Issue date Sep 9, 2003
- Ecole Polytechnique Federale de Lausanne (EPFL)
- Jose Hernandez-Barajas
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polymer flocculants with improved dewatering characteristics
- Patent number 6,294,622
- Issue date Sep 25, 2001
- Ecole Polytechnique Federale de Lausanne (EPFL)
- Jose Hernandez Barajas
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
Polymer flocculants with improved dewatering characteristics
- Publication number 20020137858
- Publication date Sep 26, 2002
- Ecole Polytechnique Federale De Lausanne (EPFL)
- Jose Hernandez-Barajas
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
Polymer flocculants with improved dewatering characteristics
- Publication number 20020132948
- Publication date Sep 19, 2002
- Ecole Polytechnique Federale De Lausanne (EPFL)
- Jose Hernandez-Barajas
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE